<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator="/">
  <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
  <el-breadcrumb-item>用户管理</el-breadcrumb-item>
  <el-breadcrumb-item>用户列表</el-breadcrumb-item>
  </el-breadcrumb>
  <!-- 卡片视图区域 -->
  <el-card>
    <!-- 搜索区域 -->
    <el-row :gutter="20">
      <!-- 搜索区域 -->
      <el-col :span="8">
            <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear='getGoodsList'>
        <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
  </el-input>
      </el-col>
      <!-- 添加商品区域 -->
      <el-col :span="4">
        <el-button type="primary" @click="goAddpage">添加商品</el-button>
      </el-col>
    </el-row>
    <!-- 表格区域 -->
    <el-table :data="goodsList" border stripe>
      <!-- 索引列 -->
      <el-table-column type="index"></el-table-column>
       <el-table-column label="商品名称" prop="goods_name"></el-table-column>
       <el-table-column label="商品价格(元)" prop="goods_price" width="95px"></el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width="70px"></el-table-column>
        <el-table-column label="创建时间" prop="add_time" width="140px">
          <template slot-scope="scope">
            <div>
              {{scope.row.add_time | dataFormat}}
            </div>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="130px">
          <template slot-scope="scope">
           <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.goods_id)"></el-button>
           <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeById(scope.row.goods_id)"></el-button>
          </template>
        </el-table-column>
    </el-table>
    <!-- 分页区域 -->
    <el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="queryInfo.pagenum"
      :page-sizes="[10, 15, 20, 25]"
      :page-size="queryInfo.pagesize"
      layout="total, sizes, prev, pager, next, jumper"
      :total="total" background>
    </el-pagination>
  </el-card>
  <!-- 修改商品信息的对话框 -->
  <el-dialog
  title="修改商品信息"
  :visible.sync="editDialogVisible"
  width="50%" @close='editClosedDialog'>
  <!-- 内容区域 -->
   <el-alert
    title="提示：如果想要修改商品图片或商品描述请移步到添加商品"
    type="info" :closable="false" center class="editAlert">
  </el-alert>
  <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px">
  <el-form-item label="商品名称" prop="goods_name">
    <el-input v-model="editForm.goods_name"></el-input>
  </el-form-item>
  <el-form-item label="商品价格" prop="goods_price">
    <el-input v-model="editForm.goods_price" type="number"></el-input>
  </el-form-item>
  <el-form-item label="商品数量" prop="goods_number">
    <el-input v-model="editForm.goods_number" type="number"></el-input>
  </el-form-item>
  <el-form-item label="商品重量" prop="goods_weight">
    <el-input v-model="editForm.goods_weight" type="number"></el-input>
  </el-form-item>
  </el-form>
  <!-- 底部区域 -->
  <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editGoodsInfo">确 定</el-button>
  </span>
</el-dialog>
  </div>
</template>
<script>
export default {
  data () {
    return {
      // 查询参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      // 商品列表
      goodsList: [],
      // 总数据条数
      total: 0,
      // 控制修改商品信息的对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到的商品信息对象
      editForm: {},
      // 修改商品信息的验证规则对象
      editFormRules: {
        goods_name: [{ required: true, message: '请输入商品名称', trigger: 'blur' }],
        goods_price: [{ required: true, message: '请输入商品名称', trigger: 'blur' }],
        goods_number: [{ required: true, message: '请输入商品名称', trigger: 'blur' }],
        goods_weight: [{ required: true, message: '请输入商品名称', trigger: 'blur' }]
      }
    }
  },
  created () {
    // 获取所有的商品列表数据
    this.getGoodsList()
  },
  methods: {
    // 获取所有的商品列表数据
   async getGoodsList () {
    const { data: res } = await this.$http('goods', { params: this.queryInfo })
    if (res.meta.status !== 200) return this.$message.error('获取商品列表失败！')
    this.$message.success('获取商品列表成功！')
    // console.log(res.data)
    this.goodsList = res.data.goods
    this.total = res.data.total
    },
    handleSizeChange (newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    handleCurrentChange (newPage) {
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    // 根据id删除商品
   async removeById (id) {
    const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)
        if (confirmResult !== 'confirm') return this.$message.info('已取消删除！')
        // 发起请求删除商品
      const { data: res } = await this.$http.delete(`goods/${id}`)
      if (res.meta.status !== 200) return this.$message.error('删除商品失败！')
      this.$message.success('删除商品成功！')
      this.getGoodsList()
  },
  // 跳转到添加商品的页面
  goAddpage () {
    this.$router.push('/goods/add')
    },
    // 监听修改商品信息的对话框关闭事件
    editClosedDialog () {
       this.$refs.editFormRef.resetFields()
    },
    // 展示修改商品信息的对话框
   async showEditDialog (id) {
      // console.log(id)
      // console.log(this.editForm.goods_name)
      const { data: res } = await this.$http.get('goods/' + id)
  if (res.meta.status !== 200) return this.$message.error('查询用户信息失败')
  this.editForm = res.data
  // console.log(res.data)
      this.editDialogVisible = true
  },
    // 修改商品信息并提交
  editGoodsInfo () {
       this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        // 发起请求修改商品信息
        const { data: res } = await this.$http.put('goods/' + this.editForm.goods_id, this.editForm)
        if (res.meta.status !== 200) return this.$message.error('更新商品信息失败！')
        // 关闭对话框
        this.editDialogVisible = false
        // 重新获取商品列表
        this.getGoodsList()
        // 提示修改成功
        this.$message.success('更新商品信息成功！')
      })
    }
  }
}
</script>
<style lang="less" scoped>
.editAlert {
  margin-bottom: 20px;
}
</style>
